Of one-halei to clemens



July 10, 1928 l676,853

W. ERASE'.

SEWING MACHINE WITH SEVERAL NEEDLES Filed March 21, 1925 2 Sheets-Sheet 1 kg l n 2 Sheets-Sheet 2 Filed March 21 1925' W ERASE SEWING MACHINE WITH SEVERAL NEEDLES July 10, 1928.

Patented July 1t), 1

UNITED STATES YJlLHELM ERASE, OF BERL'N, GERMANY, .A5315 NOR G3i QNE-HALF T0 CLEMENS GRAAFF, OF BERLIN, GERMANY.

SEWING MACHXNE WITH SEVERAL NEEDLES.

Application filed March 21, 1925, Serial No. NAZS, and in Germany March 21, 1924.

This intention relates to improvements in seninganochiues with several needles.

(,)ue object ot .my iuvei y.ion is to still Yfurther in'iprove machines ot this hind hy prtwidinaj moans 'tor adjustinal the distance between the needles. The adjustu'icnt ot the il istanee hetween the needles may he obtained hy ditferent ways. So for instance a head made iu several parts may he arranged on the needle-bar oll a sewing-machine, every part ot said head preferably being capable ot hearin each one needle and the parts heiug adj stable with relation to one another. The adjustment may he such that not only the distance of the needles from one another ma)Y he adjusted. hut also that one or niore ot' the needles may he temporarily swung;` out of operative position. 3y means of a head so constructed with several needles. any sewine'eiiaehine may he changed to a machine with several needles. having the needles arranged one behind the other within the direction oft sewing in order to multiply Ythe output o? the machine. it the lfecd of 'the u'orl; s adjusted accordingly.

Furthermore instead ot arranging the needles upon a common head ifo-r instance each needle could he lixed to a separate needlednir. or a head ot the kind descrilreifl mieht he mounted upon the auxiliary needlehar, or in ease olf several auxiliary needlelmrs heine' provided, upon one or several ot then). These auxiliary needle-hars may he coupled with the main needle-bar in such a manner. that the distance of the auxiliary needle-hars from the main needle-har may he varied. The machine is so constructed that the needles or the needle-hars respectively may he lifted separately and independently. In ease ot the arrangement of one or more auxiliary needlesbare. 'thisl may he ohtaiued ttor instance hy coupling the auxiliary needle-hai.' with the main needlehar iu an easily detachable manner, so that by loosening' said couplinfdil the auxiliary needliirhar ma): he lifted alone. Il: it is intended to put the auxiliary needle-har out o'lf action said har lor instance may he tastened to a separate support. The amount ot the tied of work, being in close relation to the arrangement olf several needles preterahly an automatic adiustment oit' the distance ot the needles is combined with the adjustnient ol the leed ot work.

The drawing aiiixed to this specification and 'forming part ot it shows two embodiments of my invention hy way ol' example.

'lhe same letters ol. relerenee indicate similar parts throughout all the figures oi l he drawing.

il il shows the trout View of the head ot a se.'\'iiigniacliine havingI a head supporting' several needles attached to the needle-bar.

Fig. 2 is a similar View, the distance of the needles being changed.

Fig. represents the parts of the needle head.

Fig'. Ll is a side elevation of a sewingniaeliine having several needle-bars arranged in its head, and showingl means for regulating the feed ot work corresponding to the distance et the needlehars i iti 5 shows a longitudinal section through the head oi the machine taken in the line l P ot Fig. S. This figure shows also the arrangement ot the needlediars.

hie'. t3 is a similar' View the distance of the needles heine` increased.

Fig. 'Y corresponds to Fig. 5 shows howeter the auxiliary needle-bar in an elevated position and secured hy a support.

Fing. 8 is a plan View o' the head oit the shown in Fig. 5.

Fie'. i) is a plan lview of Fig. (5, and

' j. l() is a detail View showing the manner of leading the auxiliary needle-har.

lilith the embodiment ot the .invention shown in Figs. l to 3 o is the head of a usual sewingsmachine haif'ing fixed a head with seri-irai needles to its needle-bar 7). This head consists ol a part c iixed to the needlen liar hearing one needle and oft a sliding piece (l hearing the second needle. As may he seen from Fig. 3 the parts c is provided with a groove c within which the part Z is guii'lml hy means of a key In Fig. 3 the pai t d .is shown from the rear. Furthermore the part C is provided with a slot through u .ich a eet screw It may he passed engaging; a threaded here i of the part d, in order to perinit the part d to loe clamped to the part c, the distance of the needles being adjusted. i.. ead ol guiding the part CZ in the part c by means of groove and key. for instance a slott d sleeve could he combined with the part c so that the part (Z engages the iart c by means of a cylindrical portion. he slot ot the sleeve et the said part c may communicate with one or more lateral slots, in order to lock the part d to the part c by means ot a bayonet-catch allowing the needle /lr to be swung laterally so that it is possible to sew with the single needle m.

lilith the en'ibediment ot the invention accoi-ding to Figs. al. to 10 an auxiliary needlebar n, bearing the second needle, is mounted within the head a ot the n'iachine. This bar if; guided within a sleeve o which can be rocked within corresponding cavities fr and s of the head of the niacliiiie by nieans of two levers n and (j. ri`lie. levers y) andv (,f are rotatably mounted on ournals respectively arranged at the` upper and at the lower ends oit the head ol! the machine. The distance of the sleeve and at the saine time the distance ot the auxiliary needle-bar n iii-oni the inain needle-bar may be varied in any niaiiner, so ior instance by means ot an c:- ccntric disk u mounted on the head of the nirfzchine, the sleeve 0 being grossed against this disk by means ot a spring fu lifted at one end to the said sleeve and at its other end to the head of the machine. rlfhe coupling between the inain needlebar and the auxiliary needle-bar niay be performed any means. `With the nioditication shown thc needle-bars are coupled by ineans of a forli fw lixed to the inain necdle-liar and by ineans olE au extension au lined lo the aux iiry iiec- (lle-bar. Qaid extension is provided with a slot or groove y (fig. il) engaged by a nin e lined to ay spring carried by and going througli one ariii oif said Yl'orl; w. il it is desired to litt the auxiliary needle-bai' n the extension e niay be turned out ol the Ylorlr lo by a slight. lateral pressure, whereurion the needle-bar may be moved in the direction ol. its longitudinal axis. ln order to be able to lock the needle-bar n in an elevated position if said bar out o'l' use a rod 2 is n'iounted upon the head of the machine, said rod bearing a iorlr El corresponding in construction to the fork fw. its may be seen :from Fig. the extension may be lixed within the torl; 3. fiv spring supported pin fl ei'igaging a `groove of said extension prevents an unintended loosening oli' said extension troni the l'orlr 3.

In; intentioned above ynreterably the distance between the needles may be regulated auton'iatically with the regulation oit the feed of work. To thisl end an arm l' or the like is connected to the adjusting lever of the stitch regulating device (l regulatingl the feed 01"' work, said arm engagingl a 'l'ork 9 lined to the end ot a spindle il. To the other end ot the spindle 8 the said eccentric disk u is fixed, so that said disk may be turned correspondingly with the adjustment oit the stitch regulating device varying at the saine time the distance ot' the auxiliary needle-bar troni the niain needle-bar.

lllhat I claim as my invention and desire to secure by Letters Patent is:

l. ln a sewing machine the combination of two needles arranged one behind the other in the direction of sewing, with iiiieans to vary the distance between said needles, and a stitch regulating device by ineans of which the distance between said needles is regulated according to the feed of the work.

In a sewing machine the combination of two needles arranged one behind the other in the direction ot sewing, a main needlebar and an auxiliary needle-bar each carrying one ot said needles, a stitch regulating device, and means operated by said stitch regulating device for adjusting the distance between said needles.

2). ln a sewing machine the combination of two needles arranged one behind the other in the direction of sewing, a n'iain needle-bar and an auxiliary needle-bar each carrying one ot' said needles, a sleeve. tor guiding' said a iniliary needle-bar movably mounted in the head ot the machine, a stitch regulating device. an arni fixed to the adjusting' lever ot' said stitch regulating device, a spindle, a crank Vfixed to one end of said spindle and e l jed by said arni, and an eccentric disk l'ixed to the other end of said spindle and engaging tlie'said sleeve guiding the auxi iary needle-bal'.

el. lin a sewing n'iachine the con'ibination oit two needles arranged one beh" d the other, a. niain needle-bar and an auxiliary needlebar each carrying one ot said needles, means Alfor Vwai-ying` the dist-ance between said needles, a tork lined to the main needle-bar, a rod lined to the head of the sewing machine, a 'fork at the end ot said rod, and an extension lixed to the auxiliary needleebar adapted to engage with said forks respectively iii order to bring the auxiliary needle-bai into or out ot working connection with the n ain needle-bar.

ln a sewing machine the combination with the head of the machine of two needles arranged one behind the other in the direction of sewing', a inain nee lle-bar and an auxiliary needle-bar each carrying one of sa'd needles, a pair ot' arms pivoted at the upper and lower ends of the head of the machine, a sleeve surrounding said auxiliary needle-bar mounted on said arms, and means tor swinging said sleeve to vary the distance between said needles.

In testimony whereof l aliix my signature.

llLHELlll ERASE. 

